Tungaloy 6801915 Ceramic Turning Insert CNMA432 FX105

Product Description

The TUNGALOY 6801915 is a ceramic turning insert in the CNMA432 geometry with manufacturer grade FX105. Made from silicon nitride ceramic and left uncoated, it delivers the high-temperature hardness and wear resistance needed for aggressive material removal on cast iron. The insert features an 80-degree diamond shape, a negative rake angle, a honed cutting edge, and a flat-top chip breaker. With a 0.5 inch inscribed circle and a 0.0315 inch corner radius, it suits medium to roughing passes where edge strength and thermal stability are priorities. Licensed machinists and CNC operators working in production turning environments are the primary users.

This insert is suited for turning, facing, and boring operations, with cast iron identified as the primary workpiece material. The CNMA432 geometry is common in high-speed finishing and semi-roughing passes on gray iron, ductile iron, and similar ferrous castings. It is held by a clamp and pin method, which provides rigid support under interrupted and continuous cuts. With four usable cutting edges, the insert allows efficient cost-per-edge utilization in high-volume production settings.

Key Features

• Silicon nitride ceramic substrate - uncoated, designed for dry high-speed cast iron machining
• 80-degree diamond (CNMA) insert shape provides strong cutting edge geometry with four usable edges
• Negative rake angle with honed cutting edge style for improved edge durability under load
• Flat-top chip breaker configuration - no wiper edge, neutral hand orientation
• Clamp and pin holding method supports secure seating in standard CNMA toolholders
• Maximum depth of cut up to 0.1181 inches; inscribed circle of 0.5 inches for mid-to-large insert tooling
• Multi-use application: turning, facing, and boring from a single insert geometry

Compatibility

Designed for use in standard CNMA-style toolholders accepting a 432 insert size. Meets ANSI and ISO standards for CNMA 432 geometry. Suitable for tooling systems that accept clamp-and-pin insert retention. Confirm toolholder clearance and seating pocket specifications before installation.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Always power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque driver for the clamp screw to avoid cracking the ceramic insert body - do not overtighten. Ceramic inserts are brittle compared to carbide; avoid dropping or impacting the cutting edge during handling.